Earth Mat Flashcards - Common Gems
CaCO3
Aragonite (Pearls)
Be Al2 (Si6 O18 )
Beryl
Beryl varieties
Emerald (green)
Aquamarine (Blue)
Heliodore (yellow)
BeAl2O4
Chrysoberyl
Chrysoberyl varieties
Alexandrite (green by day, red by night),
Cat’s eye (yellow – green – brown)
Cu4H4O10 (OH)8
Chrysocolla
Al2O3
Corundum
Corundum varieties
Ruby (red), sapphire (blue)
Andradite gem
Demantroid
Grossular gem
Hessonite
NaAlSi2O6
Jadeite
(Na,Ca)8 (AlSiO4)6 (SO4, S,Cl)2
Lazurite
Lazurite with calcite and px
Lapis Lazuli
Cu2CO3(OH)2
Malachite
KalSi3O8
Microline
Microcline gem
Amazonite
Olivine gem
Peridot
Iridescent plag? Opalesque? Golden Shine?
Labradorite; Moonstone; Sunstone
Banded chalcedony
Agate
Mint green qtz
aventurine
Red chert
jasper
Green chalcedony
chrysoprase
mottled gray qtz
moss agate
layerd chalcedony
onyx
MnCO3
Rhodochrosite
Na4(AlSiO4)3Cl
Sodalite
MgAl2O4
Spinel
Al2SiO4(F,OH)2
Topaz
(Na,Ca)(Li,Mg,Al)(Al,Fe,Mn)6(BO3)3(Si6O18)(OH)4
Tourmaline
Ca2Mg5Si8O22(OH)2
Tremolite-actinolite
Tremolite-actinolite gem
Nephrite Jade
CuAl6(PO4)4(OH)8·4H2O
Turquoise
Ca2Al3(Si3O12)(OH)
Zoisite
Violet blue variety of zoisite
Tanzanite